diff --git a/docs/examples/ch03NiModelling/solutions/diffpy-cmi/fitBulkNi.py b/docs/examples/ch03NiModelling/solutions/diffpy-cmi/fitBulkNi.py
index 5ff8f65..ce58d9d 100644
--- a/docs/examples/ch03NiModelling/solutions/diffpy-cmi/fitBulkNi.py
+++ b/docs/examples/ch03NiModelling/solutions/diffpy-cmi/fitBulkNi.py
@@ -33,7 +33,7 @@
 # First we store the absolute directory of this script,
 # then two directories above this,with the directory
 # 'data' appended
-PWD = Path(__file__).parent.absolute()
+PWD = Path(__file__).parent.resolve()
 DPATH = PWD.parent.parent / "data"
 
 # 3: Give an identifying name for the refinement, similar
diff --git a/tests/conftest.py b/tests/conftest.py
index e3b6313..cf27678 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -1,8 +1,27 @@
 import json
+
+# tests/conftest.py
+import shutil
 from pathlib import Path
 
 import pytest
 
+PROJECT_ROOT = Path(__file__).resolve().parents[1]
+EXAMPLES_ROOT = PROJECT_ROOT / "docs" / "examples"
+
+
+@pytest.fixture(scope="session")
+def tmp_examples(tmp_path_factory):
+    """Copy the entire examples/ tree into a temp directory once per
+    test session.
+
+    Returns the path to that copy.
+    """
+    tmpdir = tmp_path_factory.mktemp("examples")
+    tmp_examples = tmpdir / "examples"
+    shutil.copytree(EXAMPLES_ROOT, tmp_examples)
+    yield tmp_examples
+
 
 @pytest.fixture
 def user_filesystem(tmp_path):
diff --git a/tests/test_examples.py b/tests/test_examples.py
new file mode 100644
index 0000000..00907fd
--- /dev/null
+++ b/tests/test_examples.py
@@ -0,0 +1,8 @@
+import runpy
+
+
+def test_all_examples(tmp_examples):
+    scripts = list(tmp_examples.rglob("**/solutions/diffpy-cmi/*.py"))
+    for script_path in scripts:
+        print(f"Testing {script_path.relative_to(tmp_examples)}")
+        runpy.run_path(str(script_path), run_name="__main__")